ISO 12725-2019 PDF

Full title and description

ISO 12725:2019 — Nickel and nickel alloy castings. This International Standard specifies requirements for nickel and nickel‑alloy castings including alloy identification, composition, mechanical properties, manufacture (melting and heat treatment), welding restrictions, marking and supplementary delivery requirements for a range of corrosion‑ and high‑temperature service alloys.

Abstract

This document sets out graded requirements for nickel and nickel‑alloy castings intended for a broad range of applications in corrosive and high‑temperature environments. It defines alloy identification rules, chemical composition limits, minimum mechanical properties, heat‑treatment and manufacture notes, marking/traceability provisions and optional supplementary requirements for purchaser‑manufacturer agreements.

General information

• Status: Published / current (confirmed at review).
• Publication date: March 2019 (published edition 2, 2019‑03).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 77.150.40 (Nickel and chromium products / Nickel and nickel alloys).
• Edition / version: 2 (Second edition, 2019).
• Number of pages: 12 pages.

Scope

ISO 12725:2019 applies to nickel and nickel‑alloy castings and specifies the requirements to be used for ordering and acceptance. The standard covers alloy identification, composition limits, minimum mechanical properties (tensile, yield/0.2% proof stress, elongation), recommended heat treatment schedules, manufacturing considerations (melting routes, refining and welding guidance), marking and optional supplementary requirements to be agreed between purchaser and manufacturer. It is intended for castings used in corrosive and elevated‑temperature applications.

Key topics and requirements

• Alloy identification rules and designation principles (informative annex with chemical‑symbol based identification).
• Chemical composition limits for the covered grades (tables of element maxima/minima).
• Specified minimum mechanical properties and testpiece requirements (tensile, proof stress, elongation; reference to tensile test method ISO 6892‑1).
• Manufacturing requirements: acceptable melting/refining practices, heat‑treatment instructions per grade, and welding restrictions for specific alloys.
• Delivery, marking and traceability: purchaser information to be supplied, marking options, and supplementary requirements (NDT, inspection and acceptance criteria).

Typical use and users

Typical users are foundry and casting manufacturers, materials and design engineers, procurement/specification writers, quality and inspection personnel, and purchasers of corrosion‑ or high‑temperature service components made from nickel and nickel alloys. The standard is used when specifying material grade, acceptance criteria and delivery conditions for cast parts in chemical, power, petrochemical, aerospace and similar industries.

Related standards

ISO 12725:2019 replaces ISO 12725:1997 and is maintained under ISO/TC 155 (Nickel and nickel alloys). It references test method standards such as ISO 6892‑1 (tensile testing) and is complementary to other national/international specifications for nickel castings (for example ASTM specifications addressing nickel and nickel‑alloy castings).

Keywords

nickel, nickel alloy, castings, chemical composition, mechanical properties, heat treatment, melting, welding restriction, marking, traceability, ISO 12725, ISO/TC 155, ICS 77.150.40

FAQ

Q: What is this standard?

A: ISO 12725:2019 is an International Standard that specifies requirements and delivery conditions for nickel and nickel‑alloy castings (second edition, published March 2019).

Q: What does it cover?

A: It covers alloy identification, chemical composition limits, minimum mechanical properties and testing, manufacturing notes (melting and heat treatment), welding guidance/restrictions, marking and optional supplementary requirements to be agreed between purchaser and manufacturer.

Q: Who typically uses it?

A: Foundries, materials and design engineers, QA/QC inspectors, spec writers and purchasers in industries that use nickel castings for corrosion‑resistant or high‑temperature applications.

Q: Is it current or superseded?

A: Current. ISO 12725:2019 is the active (second) edition and supersedes ISO 12725:1997. The 2019 edition has been confirmed in ISO’s review cycle.

Q: Is it part of a series?

A: It is part of the body of standards maintained by ISO/TC 155 on nickel and nickel alloys and complements other materials and test‑method standards (e.g., tensile and inspection standards) referenced within the document.

Q: What are the key keywords?

A: nickel, nickel alloy, castings, composition, mechanical properties, heat treatment, welding, marking, traceability, corrosion resistance, high temperature.